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On May 23, 2005, EPA issued a "Final Determination of Corrective Action Complete without Controls" letter to the General Motors facility at Martinsburg.. This completes the Corrective Action work at the facility.

History :

General Motors Corporation Service Parts Operation ("GMSPO") facility is approximately 31-years old and is located in Martinsburg, West Virginia.

In October 1993, EPA issued a RCRA administrative order directing the company to proceed with site cleanup in accordance with the Corrective Measures Alternative selected in EPA's August 3, 1992 RCRA Record of Decision ("ROD") for the facility. EPA and the facility are working jointly to meet the remedial endpoints described in the order, which include:

Reduction of naphthalene in the bedrock aquifer to the protective level of 0.400 parts per million (ppm).

Removal of paint thinner that exists as free product in the clay soil and shallow bedrock near the source of the leak.

Releases from an above ground tank containing paint thinner had contaminated the soil and groundwater at the facility. To remediate the soil and groundwater, GMSPO has installed a remedial system consisting of a groundwater dewatering system with soil vapor extraction (SVE). The groundwater dewatering and treatment system was designed to lower and control the localized water table to enhance both dissolved and separate phase constituent removal , while enhancing the SVE system recovery of paint thinner. The remedial system has been in operation since July 1997. In January 2001, the remedial system was shut down for an initial test period to demonstrate compliance with the groundwater remedial endpoint. Based on initial compliance , the shut down was extended and the compliance data has been continually collected.

Based on the data submitted, EPA believes the first remedial endpoint has been met. That is,
reduction of naphthalene in the bedrock aquifer to the protective level of 0.400 parts per million (ppm). The second endpoint will be met if General Motors can demonstrate that no free product has been observed in the shallow compliance wells for a period of three consecutive years. The last observed product in a well was November 2001. GMC continues to monitor the compliance wells, with the November 2004 as the end point for three consecutive years. In December 2004, GMC reported that it had achieved the second endpoint as required by the ROD.

A forty-five day public comment period was held in April/May 2005 over the Final Completion Determination. There were no comments received during this time. On May 23, 2005, EPA issued a "Final Determination of Corrective Action Complete without Controls" letter to the facility.

The property surrounding GMSPO is primarily open agricultural land with some lightly populated residential areas nearby.
There has been no public involvement since the remedy was selected and subsequently installed.

Background

Located in Martinsburg, West Virginia, GMSPO was built in 1968 as a general warehousing and packaging of automotive parts facility. The facility consists of approximately 300 acres with all production operations located in a two million square foot building. The site is bounded by Interstate 81 to the south and southeast, and by railroad lines to the north and west. GMSPO also operated a prime painting area and continues to operate a maintenance are at the facility. Hazardous waste were generated in the prime painting area and the maintenance areas

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Questions

The EPA is dedicated to providing you with timely and accurate information about our work at this site. If you have any questions or concerns, please contact the EPA Project Manager:Mr. Michael Jacobi (215) 814-3435.